JP3188608U - Safety hook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety hook with a lock function capable of preventing the latch from being opened by mistake and ensuring safety. A hook body 20, a latch 30, a spring 40 and a safety lock 50 are provided, the safety lock has an operating lever 51 and a spring stopper 52, and the spring stopper is inserted into a slide groove 35 of the latch and at least one. It has one protrusion 53, the safety lock slides inward, the protrusion is fitted into the lock hole 36 of the slide groove, the operating lever is placed outside the recessed groove of the hook body and the mouth 38 of the latch, and the operating lever. The latch is kept locked by submerging the hook inside the hook. Further, when the safety lock slides outward, the protrusion is fitted into the unlocking hole 37 of the slide groove, and the operating lever is separated from the recessed groove and the mouth to release the lock function, the latch is swung outward to be released. Can be done. [Selection diagram] Fig. 6

Description

  The present invention relates to a safety hook with a safety lock.

  FIG. 1 shows a cross section of a conventional rotary hook 80. The rotary hook 80 includes a hook body 81, a latch 82 that is slidably mounted on the hook body 81, and a spring 84 that acts between the hook body 81 and the latch 82 by a compressive force. The hook body 81 has a hook 85 formed at one end and a shaft 86 formed at the other end. The hook 85 can hook a ring 71 on a connection object 70 such as a pet collar and a walking lead. The shaft 86 is used for mounting the rotating ring 83. The rotating ring 83 is used for connecting a belt 90 or the like, for example, a string or a chain. The spring 84 maintains the latch 82 in a position where the hook 85 is closed by elasticity, while the hook 85 and the latch 82 constitute a blocking hole 87. If the ring 71 is connected at this time, the purpose of the connection can be achieved.

  FIG. 2 shows a cross section of another conventional rotating hook 80a. The rotary hook 80a is substantially the same as the rotary hook 80 described above, a hook body 81a having a hook 85a and a shaft 86a, a latch 82a used for opening and closing the hook 85a, and a rotary ring 83a mounted so as to be rotatable on the shaft 86a. And a spring 84a mounted between the hook body 81a and the latch 82a. The difference between the rotary hook 80 and the rotary hook 80a is as follows. In the rotary hook 80a, the latch 82a is attached to the hook body 81a so as to be able to swing. The spring 84a is composed of a torsion spring. The latch 82a is maintained at a position where the hook 85a is closed by elasticity, so that a blocking hole 87a is formed. The blocking hole 87a and the ring 71 are connected to each other.

JP 2007-117573 A

  The latches 82 and 82a of the rotary hooks 80 and 80a described above have levers 88 and 88a that protrude outward. The levers 88 and 88a are used for operating the latches 82 and 82a. However, since the levers 88 and 88a protrude outwardly, if they are moved by the ring 71 or external force, the latches 82 and 82a are released, and the hooks 85 and 85a and the ring 71 are separated from each other. It may lead to a situation. When such a situation is serious, an event occurs in which the connected dog is suddenly released.

  In order to solve the above-described problems, the present invention mainly aims to provide a safety hook with a lock function that can prevent a latch from being mistakenly opened and can ensure safety.

  The safety hook according to the present invention includes a hook body having an opening at the front end, a rotating ring disposed at the end of the hook body, a latch connected to the inside of the hook body, and a safety that is slidably mounted on the latch. A lock and a spring supported between the hook body and the latch; The arm of the latch seals the upper part of the opening through the elasticity of the spring and has a notch at the bottom. Since the notch and the lower part of the opening constitute a sealing hole, the ring of the connection object can be locked. Since the safety lock performs a lock function on the latch when sliding to the lock position, it is possible to prevent an event such as moving the latch by mistake to open the opening and separating the ring and the hook body. When the safety lock is slid to the unlocked position, the latch is operated to swing outward, so that the arm can be separated from the opening of the hook body and the ring can be removed.

  In contrast to conventional rotating hooks, the present invention locks the latch with a safety lock, which eliminates the possibility of opening the latch by mistake, prevents the connection object from falling off, and improves the safety of the rotating hook. it can.

  The technical contents, objects and features of the present invention will become apparent from the following drawings and detailed description of embodiments.

It is sectional drawing which shows the conventional rotation hook. It is sectional drawing which shows another conventional rotating hook. It is a perspective view which shows the locked state of the safety hook by one Embodiment of this invention. 1 is an exploded perspective view showing a safety hook according to an embodiment of the present invention. It is sectional drawing which shows the locked state of the safety hook by one Embodiment of this invention. It is sectional drawing which shows the unlocking state of the safety hook by one Embodiment of this invention.

Hereinafter, a safety hook according to the present invention will be described with reference to the drawings.
(One embodiment)
As shown in FIGS. 3 to 5, the safety hook 10 according to an embodiment of the present invention includes a hook body 20, a latch 30, a spring 40, a safety lock 50, and a rotating ring 60.

  The hook body 20 has an opening 21 formed at the front end, and a chamber 22 formed so as to be connected to the opening 21 inside, a shaft 23 formed at the end, and a depression formed on one side. It has a groove 24 and a tightening hole 26 located below the opening 21. The opening 21 serves as a passage connecting the ring 71 and the safety hook 10 shown in FIG. The chamber 22 is used for storing the latch 30. The operation of these units will be described in detail later.

  The latch 30 is housed in the chamber 22 of the hook body 20, has a mounting hole 32 used for penetrating a tightening unit 25 such as a rivet on the same axis as the tightening hole 26. Therefore, it is possible to swing toward the hook body 20 using the tightening unit 25 as a fulcrum. The latch 30 has an arm 31. The arm 31 extends to the upper part of the opening 21 of the hook body 20 and opens and closes the opening 21 as the latch 30 swings. The arm 31 has a notch 33 below. The notch 33 and the lower portion 27 of the opening 21 can form a sealing hole 34 to connect the ring 71 and perform a connecting action. The latch 30 further has a slide groove 35. The slide groove 35 has a pair of lock holes 36 and a pair of unlock holes 37 arranged on two wall surfaces of the slide groove 35 so as to correspond to each other, thereby maintaining the safety lock 50 in the locked position or the unlocked position. To do. As shown in FIG. 4, the slide groove 35 is disposed inside the latch 30, but is not limited thereto, and may be disposed on the surface of the latch 30. The latch 30 further includes a mouth portion 38 formed outside the slide groove 35. The mouth portion 38 and the recessed groove 24 of the hook body 20 correspond to each other and are used for storing the operation lever 51 of the safety lock 50.

  The spring 40 is an elastic unit that automatically restores the latch 30 to its original position. One end of the spring 40 abuts against the wing 39 at the end of the latch 30, and the other end abuts against the inner wall of the chamber 22. Therefore, the arm 30 can block the upper part of the opening 21 by the elasticity of the spring 40. In the embodiment shown in the drawings, the spring 40 employs a compression spring that acts by a compression force. However, the present invention is not limited to this, and an elastic unit having another effect may be employed.

  The safety lock 50 is slidably mounted in the slide groove 35 of the latch 30 and is used for locking or unlocking the latch 30. The safety lock 50 has an operation lever 51 and a spring plug 52. The operation lever 51 is used when operating the safety lock 50 with a finger, and the latch 30 can be easily operated. The spring plug 52 is a plate-like unit that extends from the inner side of the operation lever 51 into the inner slide groove 35 and slides. The spring plug 52 is divided into two units, and the free ends of the two units protrude outward. A protrusion 53 is provided. The protrusion 53 is coupled to the lock hole 36 or the unlocking hole 37 in the slide groove 35 according to the slide of the safety lock 50, thereby maintaining the safety lock 50 in the locked position or the unlocked position and simultaneously operating the latch 30. Restrict or allow. In the present embodiment shown in the drawings, the protrusion 53, the lock hole 36, and the unlocking hole 37 are arranged in pairs, but the present invention is not limited to this, and there is only one protrusion 53, the lock hole 36, and the unlocking hole 37. Even so, the same effect can be achieved.

  The rotating ring 60 has a shaft hole 61 corresponding to the rotation of the shaft 23 of the hook body 20, is connected to the hook body 20 by the shaft hole 61, rotates freely around the shaft 23, and is shown in FIG. 1. A belt 90 or the like, such as a string, a chain, etc., can be connected.

  As shown in FIG. 5, when the safety lock 50 slides inward, the protrusion 53 is fitted into the lock hole 36, and the operation lever 51 is placed outside the recessed groove 24 of the hook body 20 and the mouth portion 38 of the latch 30. If the operating lever 51 is lowered into the hook body 20, the latch 30 can be locked, and the latch 30 can be maintained in the locked state. Further, the operation of the latch 30 is restricted after the complete lock 50 is not unlocked, and the possibility of moving the latch 30 by mistake is reduced to the minimum, and the ring 71 of the connection object 70 is prevented from dropping. can do.

  As shown in FIG. 6, the safety lock 50 slides outward, the protrusion 53 is fitted into the unlocking hole 37, and the operation lever 51 is separated from the recessed groove 24 of the hook body 20 and the mouth 38 of the latch 30. When the lock function of the latch 30 is released, the latch 30 is actuated by the depressed portion 28 formed above the operation lever 51 or the arm 31 of the latch 30, and the latch 30 is swung outward, so that the arm 31 and the hook body 20 The ring 71 can be removed by separating the opening 21.

  As mentioned above, this invention is not limited to the said embodiment at all, In the range which does not deviate from the meaning of invention, it can be implemented with a various form.

10: safety hook 20: hook body 21: opening 22: chamber 23: shaft 24: recessed groove 25: tightening unit 26: tightening hole 27: lower part 28: recessed part 30: latch 31: arm 32: mounting hole 33 : Notch 34: Sealing hole 35: Slide groove 36: Lock hole 37: Unlocking hole 38: Mouth part 39: Wing part 40: Spring 50: Safety lock 51: Operation lever 52: Spring plug 53: Projection part 60: Rotation Ring 61: Shaft hole 70: Connection object 71: Ring 80, 80a: Rotating hook 81, 81a: Hook body 82, 82a: Latch 83, 83a: Rotating ring 84, 84a: Spring 85, 85a: Hook 86, 86a: Shaft 87, 87a: Sealing hole 88, 88a: Lever 90: Belt

Claims (4)

With hook body, latch, spring and safety lock,
The hook body has an opening formed at a front end, a chamber formed to be connected to the opening inside, and a recessed groove formed on one side,
The latch includes an arm housed in the chamber and connected to the hook body and extending to an upper portion of the opening, and a slide groove having at least one lock hole and an unlock hole. Has a notch in the lower part, the notch and the lower part of the opening constitute a sealing hole, the slide groove has a mouth corresponding to the recessed groove on the outside,
The spring is mounted between the hook body and the latch, and the upper part of the opening is blocked by the arm by elasticity,
The safety lock has an operating lever and a spring plug, the spring plug is inserted into the slide groove of the latch, and has at least one protrusion.
When the safety lock slides, the protrusion of the spring plug is fitted into the lock hole of the slide groove, and the operating lever is installed outside the recessed groove of the hook body and the mouth of the latch. The latch is maintained in a locked state, the safety lock slides, the protrusion of the spring plug is fitted into the unlocking hole of the slide groove, and the operation lever is separated from the recessed groove and the mouth. When the latch function of the latch is released, the latch can be operated to swing outward, and the arm and the opening of the hook body can be separated from each other.   The safety hook according to claim 1, wherein the safety hook further includes a rotating ring that rotates around a shaft formed at an end of the hook body. The unlocking hole and the locking hole are arranged in pairs on the two wall surfaces of the slide groove so as to correspond to each other,
The spring plug is formed to extend from the inside of the operation lever to the back, and is divided into two elastic units,
The safety hook according to claim 1, wherein the protrusion is formed to protrude outward from free ends of the two elastic units.   The safety hook according to claim 1, wherein the latch has a depressed portion formed above the arm.

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